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  1. No Access

    Article

    Polychalcone derived from 8-acetoxyquinoline-5-aldehyde

    Fries rearrangement of 8-acetoxyquinoline-5-aldehyde (aqa) in nitrobenzene using AlCl3 as catalyst affords the polychalcone poly(8-hydroxy-5,7-quinolinylenecarbonylvinylene) (phqcv). Thephqcv samples were charact...

    H S Patel in Journal of Chemical Sciences (1986)

  2. No Access

    Article

    Glass-reinforced composites based on novel oligoimide-epoxy resin system

    A novel matrix resin system, viz. oligoimide-epoxy resin, has been developed to prepare glass-fibre-reinforced composites. Diaminodiphenylmethanebismaleimide-diaminodiphenylmethane (DDMBM-DDM) andp-phenylenebisma...

    H. S. Patel, V. J. Shah in Bulletin of Materials Science (1994)

  3. No Access

    Article

    A Novel Scanning Technique for Optical Coherence Tomography

    A simple two lens scanning assembly has been developed for free space optical coherence tomography. The assembly has been used to acquire surface, cross-sectional and volume images of objects with an axial sca...

    J. T. Andrews, H. S. Patel, P. K. Gupta in Journal of Optics (2001)

  4. No Access

    Article

    16O-induced transfer reactions on 90Zr

    Cross-section for transfer reactions 90Zr(16O, X) have been measured at an incident energy of 90 MeV. The angular distribution of the elastic scattering 90Zr(16O,16O)90Zr, the inelastic scattering to excited stat...

    V. Jha, B.J. Roy, A. Chatterjee, H.S. Patel… in The European Physical Journal A - Hadrons … (2002)

  5. No Access

    Article

    Time-gated optical imaging through turbid media using stimulated Raman scattering: Studies on image contrast

    In this paper, we report the development of experimental set-up for time-gated optical imaging through turbid media using stimulated Raman scattering. Our studies on the contrast of time-gated images show that...

    K. Divakar Rao, H. S. Patel, B. Jain, P. K. Gupta in Pramana (2005)

  6. No Access

    Article

    Novel Semi-Interpenetrating Polyimide Network Based on Acryl End Capped Oligoimides

    Amino terminated oligoimides (AOIs) were prepared by the Michael addition reaction of various bismaleimides(1a–c) with excess of 4,4′-diamino diphenyl methane (DDM). These AOIs were characterized by elemental ...

    H. S. Patel, S. R. Patel, B. C. Dixit in Journal of Polymer Research (2006)

  7. No Access

    Article

    Measurement of gradient refractive index profile of crystalline lens of fisheye in vivo using optical coherence tomography

    We report the use of optical coherence tomography (OCT) for noninvasive measurement of the refractive index profile of a crystalline lens of a fisheye. The approach exploits the fact that OCT provides a direct...

    Y. Verma, K.D. Rao, M.K. Suresh, H.S. Patel, P.K. Gupta in Applied Physics B (2007)

  8. No Access

    Chapter and Conference Paper

    An Innovative Approximate Method for Analysis of Continuous Beam

    The safety and serviceability of a structure is dependent on how accurately the forces and the response associated with it are determined. Many precise methods of analysis have been well documented in the lite...

    D. J. Varia, H. S. Patel in Proceedings of International Conference on… (2014)

  9. No Access

    Chapter and Conference Paper

    Soil-Foundation-Structure Interaction Effects in Seismic Behaviour of RC Elevated Water Tank

    Presented here is an analysis of the effects of soil-foundation-structure interaction (SFSI) on seismic response of elevated water tanks. A particular importance is the issue of water motion inside the contain...

    Chirag N. Patel, H. S. Patel in Proceedings of International Conference on… (2014)

  10. No Access

    Chapter and Conference Paper

    Seismic Response of RC Elevated Water Tank Considering Site Specific Acceleration Time History

    Elevated liquid storage tanks are extensively used to store water, inflammable liquids and other chemicals. Also, required to remain competent enough during and after earthquake to ensure availability of water...

    Chirag N. Patel, H. S. Patel in Proceedings of International Conference on… (2014)

  11. No Access

    Article

    Evaluation of Photodynamic Efficacy of Chlorin p 6 Bound to Amine-Modified Silica Nanoparticles in Colon and Oral Cancer Cell Lines

    We report results of our studies on cellular uptake and phototoxicity of free chlorin p 6 (Cp 6) and Cp 6 bound to amine-modified silica nanoparticles (Cp ...

    A. Uppal, B. Jain, M. K. Swami, H. S. Patel, A. Dube, P. K. Gupta, K. Das in BioNanoScience (2014)

  12. No Access

    Chapter and Conference Paper

    Biomedical Applications of Lasers

    Lasers are being increasingly used for biomedical imaging, diagnosis, and therapy. In this chapter we first provide a brief overview of light propagation in tissue. Next we discuss the techniques developed for...

    Pradeep Kumar Gupta, H. S. Patel in Laser Physics and Technology (2015)

  13. No Access

    Article

    Light Based Techniques for Improving Health Care: Studies at RRCAT

    The invention of Lasers in 1960, the phenomenal advances in photonics as well as the information processing capability of the computers has given a major boost to the R&D activity on the use of light for high ...

    P. K. Gupta, H. S. Patel, S. Ahlawat in Proceedings of the National Academy of Sci… (2015)

  14. No Access

    Article

    Noninvasive assessment of cutaneous alterations in mice exposed to whole body gamma irradiation using optical imaging techniques

    We report the results of a study carried out to investigate the potential of optical techniques such as optical coherence tomography, Mueller matrix spectroscopy, and cross-polarization imaging for noninvasive...

    P. Sharma, K. Sahu, P. K. Kushwaha, S. Kumar, M. K. Swami… in Lasers in Medical Science (2017)

  15. No Access

    Chapter and Conference Paper

    To Study the Structural and Electronic Properties of TiBeO3 Using Density Functional Theory

    In this work, we have performed Density Functional Theory (DFT) calculation using Generalized Gradient Approximations (GGA) for the structural optimization of TiBeO3. We have calculated equilibrium volume for min...

    H. S. Patel, V. A. Dabhi, A. M. Vora in Advances in Spectroscopy: Molecules to Materials (2019)